I have not mentioned the thumbnail, only the title.

I would argue that this sort of clickbait is not really intended for person 1. A bit for person 2 but probably most for person 3, the guy looking at YouTube’s recommendation algorithm. The title purposefully omits information to draw the reader in.

Again, I’m making no arguments about this being a bad or immoral thing to do, I’m simply saying that is a classic clickbait tactic. It’s his job to draw in viewers and that’s what he’s doing.